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In the reaction Mg (s) + 2HCl (aq) H2 (g) + MgCl2 (aq), how many moles of hydrogen gas will be produced from 75.0 milliliters of a 1.0 M HCl in an excess of Mg? A. 0.75 moles B. 1.0 moles C. 0.038 moles D. 0.075 moles

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